Develop Bugs

Charging via USB on computer

My device charges very slowly if the display is off. If the display is on it does not charge at all.
I've installed the Samsung drivers from the website. Is anyone else able to charge their device via USB? I need to know if I should exchange mine.
Sent from my SGH-T989 using XDA App

I was able to charge my sgs2 yesterday at work through the usb port. It might be the phone, or maybe the usb port you are trying to use doesn't have enough juice to charge the phone? have you tried another usb port on the computer?

usb will always charge really slow compared to an wall outlet

Yes I have tried multiple ports, computers, and cables. Oh well, I guess I'll live with it.
Sent from my SGH-T989 using XDA App

+1
dimitrie said:
usb will always charge really slow compared to an wall outlet
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what he said
if you want fast charging, do it from a wall outlet

jasontx said:
My device charges very slowly if the display is off. If the display is on it does not charge at all.
I've installed the Samsung drivers from the website. Is anyone else able to charge their device via USB? I need to know if I should exchange mine.
Sent from my SGH-T989 using XDA App
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USB supplies max 500mA. Is probably half what the wall charger is giving you. Nexus S is only 750. My guess gsII is 1000 (1A). iPad charger is 2A.
Edit: no a higher power one than the stock charger won't charge the phone faster in a noticeable way. Charging circuits in remotely modern phones limit current to that safe max. If they don't you're probably risking damaging your phone.
Sent from my Nexus S using Tapatalk

I understand that the USB on the computer is weaker. I was surprised to see that when the phone was connected to the computer, screen on, and streaming music that my battery was actually reducing slowly. I would expect the opposite and this behavior seems abnormal.
Sent from my SGH-T989 using XDA App

that's exactly the reason why in car i use the 2A charger (2000 mAh), and in house i use 1000 mAh wall charger
if i leave it at the computer USB charging, i've to keep it iddle for it to charge after like... 4+ hours
that's usually what i do at the work place, so i keep the battery topped up, for when i need to jump back in the road
as long as you have WiFi on, or 3G/4G on, or if the CPU is in high activity, you'll never see the charge ever reaching the battery.
i always keep a spare wall charger at the office as well for times when i need a quick charge

Thanks for the input everyone! I'm glad it's not defective cause I love this phone!
Sent from my SGH-T989 using XDA App

My issue is a little different but decided against another thread. My phone will not charge with any other cable. Has to be pluged in to oem cable. I left it all night on my old phones charger and woke up with it almost dead. Plugged into oem it just charges super slow. Should i take it back?
Sent from my SGH-T989 using Tapatalk

Does the other micro USB cable work with other devices? If not, might be a defective cable.
On a side note, who prefers to charge via 500mah vs 1A? I have been charging my phone since day one using my printer, as well as my old Iphone. My battery performance is great! +24 hours on a single charge with moderate browsing 50/50 wifi and 4g. I typically enable the "power save" feature with minimal brightness and 15 sec screen timeout.

I worked on other devices
Sent from my SGH-T989 using Tapatalk

[Q] Charging problem
I have an issue that has popped up today. When charging through PC, the phone (not battery) is getting pretty hot and losing charge. I'm not sure what could be causing it. I stopped all extra processes and turned off the screen. This is not occurring when the phone is off.

Battery draining while plugged in to charger

I was watching the Mavericks vs Thunder game using the watch ESPN app and my nexus battery was at about 93%
I watch since halftime to the end of the game and I was plugged in to a car charger the whole time and when the game ended about 1 1/2 hrs later the battery had dropped to 53%. Can't understand it. Hope someone here can explain this to me.
Phone is galaxy nexus, obviously, the battery is the 2100 OEM battery from Verizon store, charger is a belkin dual outlet 1amp micro car charger with the cable that came with a Droid charge.
Thanks in advance ladies and gentlemen, I did look and search, didn't fins anything covering this specific issue.
Sent from my Galaxy Nexus using xda premium

i am 99% sure its the car charger. but cant give u a reason

rfvreynoso said:
Phone is galaxy nexus, obviously, the battery is the 2100 OEM battery from Verizon store, charger is a belkin dual outlet 1amp micro car charger with the cable that came with a Droid charge.
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5V right? that's not a huge draw at all on your battery, i'm assuming your car was either running or started right up afterwards...you can be certain your phone was getting that full 1A especially if your car was running. if your phone showed charging and your phone will normally charge from your car like that then you shouldve been in good shape. despite what you may think, i actually am trying to present relevant info lol but ummm other than that? i would definitely try a multimeter (.....if you have one.....) cuz that would show you exactly what you're getting in/out. usb pinouts should be somewhere on the internet. other than that, try doing the same thing (except for maybe a shorter time period if preferred) on a wall charger which should be more reliable and compare results. i've had devices that burn power faster than they receive them....but the good ole gnex? im not so sure. (engineer here).

I just recently join big red and coming from sprint with an evo 4g and didnt have this issue with that phone and same charger. I'm definitely going to try it with home charger to see if its the charger.
Extra info, the vehicle was powered on before I plugged in the charger, in case it matters any.
Thanks to all the reply thus far.
Sent from my Galaxy Nexus using xda premium

I find that under heavy usage, only the plug in wall charger gives enough juice to keep it increasing... and even that can go flat or decrease if you are really pushing it... also the way the battery stats are displayed can be flaky too... jumps in the level of charge and quick drops... hard to tell how accurate the reading is.

I hear you. That's crazy, basically the phone draws more power that the charger can provide. I would think the charger should be fine since its 1 amp just like the home charger.
Sent from my Galaxy Nexus using xda premium

Check in settings - status if it says charging (ac) or charging (usb) when plugged in you car.
If it says charging (usb) the charge amps are limited to 500mA.
Sent from my Galaxy Nexus using Tapatalk

The phone can use more power than a car charger can supply. This is commonly posted all over. Check your car charger, its likely a 0.5 amp. Buy a 1 amp or higher.

rfvreynoso said:
Phone is galaxy nexus, obviously, the battery is the 2100 OEM battery from Verizon store, charger is a belkin dual outlet 1amp micro car charger with the cable that came with a Droid charge.
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Your problem is the charger, 1 amp is the sum of the two outlets, hence you're only giving your phone 500mA max. When charging at that low of a rate, you'll drain the battery when doing anything power intensive on the phone. Your only remedies for this is to get a car charger that's capable of putting out 1 amp or more on a single line. What I personally did was get the Griffin Powerjolt dual charger for $8 on Amazon, opened it up, and soldered the center data pins on each port together.

najaboy said:
Your problem is the charger, 1 amp is the sum of the two outlets, hence you're only giving your phone 500mA max. When charging at that low of a rate, you'll drain the battery when doing anything power intensive on the phone. Your only remedies for this is to get a car charger that's capable of putting out 1 amp or more on a single line. What I personally did was get the Griffin Powerjolt dual charger for $8 on Amazon, opened it up, and soldered the center data pins on each port together.
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I though that the griffin powerjolt dual outlet charger would dish out 1amp on a single port if the 2nd port was not being used. Interesting, I can see your point. Would you happen to have a picture of, or remember which are the two that need to be bridge inside to make it a full 1amp output?
Thanks in advance.
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Herman76 said:
Check in settings - status if it says charging (ac) or charging (usb) when plugged in you car.
If it says charging (usb) the charge amps are limited to 500mA.
Sent from my Galaxy Nexus using Tapatalk
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Okay, I tried what you said and I got weird results. I used the awkward griffin powerjolt dual outlet car charger. I tried using two different cables, one was from my girl's Droid charge and when I plugged it in and check the status it said usb charging, then I plugged in a cable that came with a i go green adapter that I had purchased at an airport and the phone said ac charging. Unless the cable that came with the Droid charge can only pass 500mamp, I'm puzzle.
Both were plugged in at same time and also both cables were tried by themselves in each outlet of the griffin charger by themselves.
Interesting huh. I will keep testing and see what gives, last resort I get a more powerful car charger. Will keep you guys posted, thanks to everyone that contributed and pitch in thus far.
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Got an update on this issue. I streamed another 45 mins to 1 hr of ESPN using watch ESPN app and the results are even more interesting. I was using the wall charger that came with the Droid charge and the USB cable that came with the I go green wall adapter that I have purchased at an airport a while back. Here is what happened, when I started streaming the battery was at 94% and I plugged in phone to charger and under settings/about/status it showed AC charging. After 45 mins to 1 hr of streaming the phone was extremely Hot towards the center of the back and below the cam lenses and led light. Also the battery had dropped to 93% and the phone status showed not charging, even though the battery icon on home screen next to clock shows the lightning symbol inside the battery like is charging.
I don't understand what is happening. Grrrrrr. This is using a wall a charger for a droid charge. Now of to trying it with the OEM charger and cable.

rfvreynoso said:
Got an update on this issue. I streamed another 45 mins to 1 hr of ESPN using watch ESPN app and the results are even more interesting. I was using the wall charger that came with the Droid charge and the USB cable that came with the I go green wall adapter that I have purchased at an airport a while back. Here is what happened, when I started streaming the battery was at 94% and I plugged in phone to charger and under settings/about/status it showed AC charging. After 45 mins to 1 hr of streaming the phone was extremely Hot towards the center of the back and below the cam lenses and led light. Also the battery had dropped to 93% and the phone status showed not charging, even though the battery icon on home screen next to clock shows the lightning symbol inside the battery like is charging.
I don't understand what is happening. Grrrrrr. This is using a wall a charger for a droid charge. Now of to trying it with the OEM charger and cable.
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The battery can stop charging if it gets too hot (safety measure).
Sent from my Galaxy Nexus using Tapatalk

Herman76 said:
The battery can stop charging if it gets too hot (safety measure).
Sent from my Galaxy Nexus using Tapatalk
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Exactly, in the driver i think the overheat is set to 140F. Also when your charger showed as usb it only gets 509mA and when showing ac it gets the full 1 amp. So just pay attention next time and see if it drains when showing ac.
My car charger is a 1.3 amp and always shows as ac and never drains while charging.

Herman76 said:
The battery can stop charging if it gets too hot (safety measure).
Sent from my Galaxy Nexus using Tapatalk
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I though about that but then I was wondering, shouldn't the wall charger provide enough power to run everything in there while charging the battery or even without the battery in the phone. Like shouldn't the battery hold the charge that it already has when I started streaming as long as the charger is 1amp?
I would not care if when I stream the phone battery would just hold its charge at what it has at the moment even if it does not charge while streaming. Hopefully that is clear to understand.
To all the fellow galaxy nexus owners out there, maybe you all can test on your phones and see if you get same results as me. Download watch espn and stream the channel for 30 mins, notice what is your battery level before you start streaming, of course plug the phone to a car charger or wall charger and see if battery remains the same, drops charge, or gain charge at the end of 30 mins, or maybe an hour. I am not asking you to watch it for the 30 mins or 1 hour, just let it run and see what happen, if you can of course. only reason why I ask for watch espn is because it is the app that I have been using to stream nba games for the last few days.
Another thing since I am already here with this streaming issue, I have an original SlingBox, the cheapest of the cheapest when they first came out, just coax and that is it. I would like to know if I pay the $29.99 for the app from the market when i switch roms on my galaxy nexus would I lose the app? I have already unlocked and rooted my galaxy nexus and lets say I buy the app and I am running cm9 when I purchase it, if I change to gummy rom or back to a stock rom while still rooted would I have to re-buy the app ?
Thanks in advance for all the input.

Have u tried underclocking cpu with setcpu app?
Sent from my PG06100 using XDA App

King Jeriamas said:
Have u tried underclocking cpu with setcpu app?
Sent from my PG06100 using XDA App
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No I haven't try that. I am currently testing out roms like a mad man trying to find the best for my liking. Question for ya, As far as I know that is kernel dependent right? Like the kernel has to support it, if so which kernels do support it and what would be good underclocking settings ?

I get similar results while using navigation and pandora at the same time, the phone uses more juice than the car charger can provide.

Ironically I plugged in the oem charger and oem cable from the galaxy nexus box and open it (didn't really wanyed to do that) and streamed 30 mins of espn on watch espn and battery was at 70% when I started after 30 mins streaming it had actually climb to 78%. Confused yet everyone? What gives?
Sent from my PC36100 using xda premium

Not all that odd. Using my Fascinate charger (0.7 amp) I get noticeably slower charge times than the OEM charger (1 amp). I don't use my phone much while I'm charging so I can't provide any feedback for that.
What is the Droid Charge charger rated at?

Discharging while charging

Does anyone have issues where they are using their phone (just for simple tasks) and noticed your battery is draining significantly? Like right now, I'm typing and my battery just went down another percentage point while posing this.
Sent from my Galaxy Nexus using Tapatalk

charging off USB or the wall? USB or car chargers often can't keep up with the drain of LTE phones if you're using them at all.

I'm on AC right now. I have a power strip that sits at the foot of my bed that provides my devices juice.
Sent from my Galaxy Nexus using Tapatalk

Same issue
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nosit1 said:
Does anyone have issues where they are using their phone (just for simple tasks) and noticed your battery is draining significantly? Like right now, I'm typing and my battery just went down another percentage point while posing this.
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At which battery level % did this occur?

I'd say if it happens between the 100% to 95% range, its normal, as I have seen that with other phones too.
If it happens at any other percentage, maybe you're charger adapter is not supplying enough power, but that should not be an issue with the stock charger that came in the box.

Have you checked that it's actually charging at AC rate ? I was surprised to find that the charger for my Palm Pre 2 was charging @ USB, I swapped the cable for the one for my TouchPad (same charger) and it changed to AC charging. I'll try different cable and charger combinations when I get time.

Install "Battery Monitor Widget" and monitor the charging rate under mA.

I use the plug that came with the phone a usb to the ac adaptor. I install the app will see tonight when i charge. Also an other point when i charge at night arround 10 pm 5% in the morning wake up at 6 am my phone is charge at 95 to 97% so not fully charge plug all night
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Thereva pic not charging when screen on
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It says it's charging USB, not AC.
What does Settings -> Battery say when plugged in, AC or USB ?

Ok for some reason the adaptor that came with the phone when I charge say usb but when I use same adaptor and an other usb cable a blackberry one its say AC. What the...?
Sent from my Galaxy Nexus using xda premium

Install BetterBattery to figure out what apps are being hung up (partial wakelocks) and re-install them. This drastically increased my battery life!
Also, the screen on wastes the most battery. Try dimming your brightness

Get a 1A charger.

patthe said:
Ok for some reason the adaptor that came with the phone when I charge say usb but when I use same adaptor and an other usb cable a blackberry one its say AC. What the...?
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Its the cable. Some USB cables have the data wires shorted or missing altogether and these USB cables are known as charging cables. All they can do is charge the phone. In AC mode. Bought a USB charging cable on amazon for 7 bucks now my car charger charges in AC mode.
Sent from my Galaxy Nexus using XDA App

Wierd for the factory cable
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Charging... Taking forever...

Does anyone else have a problem with the S3 taking at least 8 hours for a full charge?
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Mine charges fairly fast and takes around 3 hours. Are you using the stock charger that came in the box ? I find that charges fastest as its 1 amp. But my blackberry charger and other micro usb chargers take a lot longer including my car charger. Usb charging from pc will be slower too. If not using stock charger give it a try
Sent from my SGH-I747M using xda app-developers app

Hoshneer said:
Does anyone else have a problem with the S3 taking at least 8 hours for a full charge?
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Yes I do find my S3 taking a long time to charge. I am connect my phone to my computer USB, not sure if using the adapter to plug in a while would make any difference. I so notice the battery sometimes gets drained pretty fast, then other days the it is pretty good.

Thanks guys, yeah I use my stock charger but I do use a USB extension so that may be the culprit but the extension worked fine with my Atrix 4G. I don't know but it is rather annoying waiting that long for a charge.
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The charger that comes with your phone is 1amp, and your computer's USB port is 0.5amp, which is why it's taking twice as long to charge. It should only take about 15 minutes to charge each 10% under 90%, and 30minutes for the final 10% (about 3 hours total)
Also, when on 0.5amp, if the phone's display brightness is set to 100%, it will barely charge at all, and even discharge under some conditions (gaming, etc)
Charging times on 0.5amp, 1.0amp, and 2.1amp chargers

Yeah, it takes way longer for me... Not sure what the problem is then. It did it even when I was running stock software. Thanks for your time, I appreciate your help.
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Hoshneer said:
Yeah, it takes way longer for me... Not sure what the problem is then. It did it even when I was running stock software. Thanks for your time, I appreciate your help.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
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If your USB extension is just a charging cable, and not a data cable, then the phone will not think it is plugged into an AC charging outlet, and only allow the 500mA data port limit. The USB port has 4 wires, the middle two are shorted together to show that it is an AC charger, allowing the full 1 amp(or 750mA as some say), but if your extention is only a charging extension it wont see the middle wires shorted, think its plugged into a computer USB port, and charge at a Max of 500mA
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[Q] Car charger keeps disconnecting/reconnecting when i try to charge s3?!

i have one of those bullet usb car chargers and i recently tried it out with my s3 at 15% battery life and it keeps comming up with the lower battery warning while i'm connected to the car charger and the status bar shows one moment it's charging, one moment it's not! I opened up this charger and the data lines are by default shorted together. The charger is rated at 1aH max. Any ideas?? I've attached pics of the insides of the charger.
Suggestions are welcome. I've just been using my s3 wall charger off ab inveter since switching to android and it's getting pretty annoying.

Does the charger work with other devices?

psykhotic said:
Does the charger work with other devices?
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works on a tom tom gps and an iphone 4s (of course only at 500mah because the data lines aren't at the correct voltage for idevices).

salils said:
works on a tom tom gps and an iphone 4s (of course only at 500mah because the data lines aren't at the correct voltage for idevices).
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USB port bad on your S3 possibly? My s2, i remember, when you pressed it down it disconnected

Try a different charger.
Not all chargers agree with all phones.
If it's not out of the question just get a new car charger made to work with the t999.
Sent from my SGH-T999 using xda premium

Karakoram2 said:
Try a different charger.
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I've been using the wall charger that came with the s3 and it has yet to sprout a brain and fix the issue in question.

elesbb said:
USB port bad on your S3 possibly? My s2, i remember, when you pressed it down it disconnected
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No problems charging on other chargers or charging My s3 with this car charger when the car is off with the car battery left on. When the car engine starts, the voltage of the cigarette port drops from around 14.5v to ~12v

It's a 12v power source.... Can you try another car charger?? What model is it?

psykhotic said:
It's a 12v power source.... Can you try another car charger?? What model is it?
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When a car isn't running though it's around 14v...this is when my S3 has no problems charging on this charger. I have some usb car chargers (idevice chargers) that don't have the data lines shorted and these work fine with the S3 apart from them not charging at 1aH.